Emergency air-brake attachment.



R. G. AVERELL.

EMERGENCY AIR BRAKE ATTACHMENT.

APPLICATION FILED APn.26, 1918.

E. ,?38@,%$& Patented Dec. 24, 1918.

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REX G. AVERILL, OF MANSFIELD, OHIO, ASSIGNOR TO THE OHIO BRASS COMPANY, OF MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY.

EMERGENCY AIR-BRAKE ATTACHMENT.

Specification of Letters Patent.

Patented Dec.. 24:, 1918.

Application filed April 26, 1918. Serial No. 230,893.

To (ZZZ whom, it may concern:

Be it known that I, REX G. AniRiLL, a citizen of the United States, residing at Mans field, in the county of Richland and State of Ohio, have invented certain new and useful Improvements in Emergency Air-Brake Attachments, of which the following is a specification.

This invention relates to an air brake attachment which is directly operated by the drawbar of a railway car to open the brake line to the atmosphere when the drawbar is rotated a predetermined amount on either side of its central position, and the object of the invention is to provide an improved construction by which the valves can be directly reset for releasing the brakes after the brake line has been opened by the engagement of the drawbar.

The invention consists in the novel construction, combination and arrangement of the parts.

In the accompanying drawing Figure 1 is a view of an attachment constructed in accordance with the principles of my invention and applied to the under side of a car.

Fig. 2 is a side elevation of the valve operating means just prior to engagement by the drawbar; and

Fig. 3 is a view of the valve operating means directly after engagement by the drawbar.

When two connected cars of a train are directed by a switch upon diverging tracks, either by accident or design, the drawbars finally reach a position such that the cars would be damaged by the drawbars, or they would be derailed. In the present invention means is employed for setting the brakes when the drawbars reach a predetermined angular position which prevents the further movement of the cars, whereupon they can be uncoupled and separately operated, it desired.

In the present invention a draWba-r l is pivoted at the end of a car 2 to swing upon a guide rail 3 which supports it adjacent the outer end by means of overhanging portions 4. Near the ends 01': the guide rail 3 are stops 5 which may be engaged by the draw-bar if it is rotated too far in either direction.

Supported by the car is an air brake mechanism, not shown, including an air brake pipe line 6 which has separate branches 7, each terminating adjacent one end of the guide rail 3. In the end of each branch is a valve 8 which is supported and spaced from the guide rail by means of a supporting member 9. Each valve has an operating arm 10 which in normal position is held adjacent the guide rail 3 by means of a bolt 11 which forms a frangible connection between the arm and the support 9. This arm isin position to be engaged by the overhanging portion 4 of the drawbar, so that as the drawbar is rotated toward the side of the car it engages the arm 10 and operates the valve opening the air brake pipe line to the atmosphere through one of the branches 7 As the car is directly stopped by the brake mech anism with the drawbar directly beneath the valve means must be adopted to permit the valve to be closed and, therefore, the arm 10 is positioned at the side of the valve so it can be rotated upwardly to the broken line position shown in Fig. 3, regardless of the position of the drawbar, and even though the drawbar may be in the position for opening the valve. This enables the operator of the car to close or reset the same valve which has been opened by the drawbar, whereby the brakes can be released.

I claim 1. The combination with a car having a pivoted drawbar, of an air brake line having a valve at each side of the car, and a valve operating member for each valve directly engaged by the drawbar at one side of the car to open the valve and rotatable out of the path of the drawbar for closing the valve.

2. The combination with a car having a pivoted drawbar and a segmental guide rail therefor at the end of the car, of an air brake line having a terminal adjacent each end of the guide rail, a valve in each terminal, and a valve operating arm which is directly engaged by the drawbar to open the valve the said arm being rotatable to close the valve without changing the osition of the drawbar.

3. The combination with a car having a pivoted drawbar and a guide rail therefor, of an air brake line having two divisions one adjacent each end of the guide rail, a valve for each end of the air brake line, a support for each end of the air brake line secured to and spacing the valve from the guide rail,

and an operating arm for the valve directly engageable by the dravvbar when adjacent the guide rail but movable out of position Where it is not engageab'le by the drawba-r.

4. The combination With a car having a pivoted drawbar and a guide rail therefor, a portion of the drawbar overhanging the guiderail, of an air brake pipe line with two terminals one at each end of the guide rail and a valve for each end of the pipe line, meanssecured to the guide rail for holding the end of. the pipe spaced from the guide rail, anarm for operating each valve, and a frangible bolt for holding the arm in contact with. said meansin the path of. the overhang ing portion of the dravvbar.

5. The combination with a car having a pivoted dravvbar, of an air brake pipe line, a

valve in the pipe line at each side of the car,

and means engaged by the drawbar for opening the pipe line to atmosphere which can be reset for closing the valve without moving the drawbar.

6. The combination with a car having a pivoted draw-bar, of an air brake pipe line, a valve in the pipe line at each side of the ear, and a valve operating arm for each valve which is directly engaged and moved by the drawbar for opening the pipeline to atmosphere but which. can be reset for closing. the valve Without, moving the drawbar from its engaging position.

In testimony whereof I have signed my name to-this specification, on this 8th day of April, A, D. 1918.

v REX Gr. AVERILL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington; D. G. 

